1. Drive: 40mm
2. Impedance: 32 OHM
3. Bluetooth version: Bluetooth v5.0
4. Bluetooth use frequency band: 2.4GHz
5. Power level: CLASS II
6. Bluetooth distance: 10 meters without barriers
7. Frequency response: 20-20000Hz
8. With A2DP/AVRCP high-quality stereo audio transmission and remote control protocol
9. Charging time is about 2 hours
10. The talk time is about 8 hours
11. Music time is about 8 hours
12. Standby time is about 120 hours
13. Battery capacity 250MAH
14. Charging power supply: DC5V
